SQL Injection in Sixapart Movable_type
CVE-2026-33088
Movable Type provided by Six Apart Ltd. contains an SQL Injection vulnerability which may allow an attacker to execute an arbitrary SQL statement.
Vulnerability class: SQL Injection
EPSS: 0.003 (27.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Sixapart Movable_type — versions 9.1.0, 9.0.5, 9.0.6
- Six Apart Ltd. Movable Type — versions 9.1.0 and earlier, 9.0.6 and earlier, 8.8.2 and earlier
- Six Apart Ltd. Movable Type Advanced — versions 9.1.0 and earlier, 9.0.6 and earlier, 8.8.2 and earlier
- Six Apart Ltd. Movable Type Premium — versions 9.1.0 and earlier, 9.0.6 and earlier, 2.14 and earlier
- Six Apart Ltd. Movable Type Premium Advanced Edition — versions 9.1.0 and earlier, 9.0.6 and earlier, 2.14 and earlier
- Six Apart Ltd. Movable Type Premium (Mt8-based) — versions 2.14 and earlier
Weakness classification (CWE)
References
- vultures@jpcert.or.jp (Vendor Advisory)
- vultures@jpcert.or.jp (Vendor Advisory)
- vultures@jpcert.or.jp (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-33088?
- CVE-2026-33088 is a critical-severity vulnerability in Sixapart Movable_type, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-04-08.
- How severe is CVE-2026-33088?
- Critical severity. CVSS v3 base score is 9.8 out of 10.